RoTa7

after about 100 miles or so the gas gauge will drop from full to empty. (yes i still have gas, ran it for another 130miles and only need 10gallons at the gas station)
i know this has been cover recently, i just need to know the part name i need to replace so i can go to the store or mazda to pick one up. is it called the fuel sensor? or do i ask for the fuel float?
thanks

rx7mcd

I have the same problem too. If you find out what the part is called let me know .

RoTa7

im trying. hoping someone here knows for sure so i dont grab the wrong part

RoTa7

?

RETed

I think something is really fucked up with your car.
Your other thread states that your voltmeter isn't working correctly, so I think it's safe to say something is wrong with your car that's causing your instrument cluster to not work correctly???


-Ted

RRTEC

iTrader: (13)

Mine does the same thing....

RiCKoLA

iTrader: (3)

yeah my 88 n/a has the same problem. i took the fuel pump/float assembly out of the tank to see if it was possibly something i could fix myself... it wasn't. The problem mine has is that the mechanical wiper arm (the one that slides across the wire windings and gives the electrical signal to the guage) wore thru the very fine wire of the windings. This results in the guage reading ok until the level drops enough to hit the worn spot in the winding, then BAM, it drops to 'E'. I was able to remove the float/sending unit from the fuel pump, so i would assume that just the fuel level sending unit can be purchased seperately rather than having to get the pump and sending unit together. I dont know how much a new one costs...and i haven't seen anyone selling a used sending unit either. You might have to buy the whole fuel pump unit in order to get the sending unit if the seller isn't willing to seperate the two....

I might pull the unit out again this weekend and take some pics so you can see what im talkin about if you've never seen it before.

Mazda43

The fuel quantity sensor part # is FB01-60-960B. It lists for about $85.00 from the dealer and $57.90 from Mazdaspeed.

RoTa7

yup so far its only them 2. i would think they are more on the common problem side then my car is fucked up side cuz i see more than one people with the problem.

for got to mention, its a s4 88 gtu (2nd s4 i ever had, first one didnt keep for long)

RoTa7

http://www.overnightautoparts.com/st...=autometer&s=1

will that work it said uni. but if not ill buy madza

RoTa7

^^^
no one knows if that autometer product would would work fine or not?

LSD-Ryu

Bump for a somewhat old post cuz i have the same problem. At full it's fine, but once it hits half tank, it drops to E. My voltmeter sometimes doesn't work too... and my gas warning light doesn't come on at all. Everything else is fine tho. So it's the sender that's messed up? What should I do about this?

RETed

If you got the money, replace it with Mazda OEM.
My GAS LOW light sensor just died.
I think all of the FC gas sender thingies are dying about now.


-Ted

My5ABaby

iTrader: (7)

I just fill up when I have around 1/4th of a tank. What's the point of letting it get that low so you actually need the gas light?

NZConvertible

What's the point of having a tank of a certain size if you only use 3/4 of it?

RoTa7

isnt there a fourm member that can get oem mazda parts at a discounted price?

m5runner

Mine showed these symptoms today on the way to Athens and I scrambled like a school girl looking for a gas station. Needless to say I'll be ordering one first thing Monday morning.

Attila the Fun

iTrader: (1)

Thanks for posting the info. Mine's been doing this for almost a year.

My5ABaby

iTrader: (7)

There's no point in letting it run far down between fill ups. One of the reasons being I don't know how accurate my gas gauge is. I'd rather play it safe than sorry.

daviddeep

iTrader: (4)

So does the fuel quantity sensor also send the signal to the low fuel light?

I have a vague recollection of what the low fuel light used to look like when it stopped working about 10 years ago in my '90 GTU. Now I have an '88 GTU and it also has no low fuel warning light. Might be worth $57.90 to fix it.

NZConvertible

Thanks to the experience of a couple of hundred of fill-ups, I know exactly how accurate my gauge is.

My5ABaby

iTrader: (7)

I know how accurate mine is to a certain point. Like I said, I don't mind filling up more often. If I have time to do it and I'm somewhere around 1/4 of a tank, I do it. Who knows when I'll really need to do it and be late for an interview or something.

RoTa7

couldnt find madzaspeed. is it a website? a store? mazdaformance.com isnt working nether

socalrotor

iTrader: (1)

I would bet he ment mazdatrix. Just a guess, but I know they sell it.

Attila the Fun

iTrader: (1)

http://www.mazdamotorsports.com/weba...0001&langId=-1

GIYF